<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>颜色变化</title>
  <link rel="stylesheet" href="layout.css">
 </head>
<body>
设置块颜色：
<a href="#!/red">红色</a>
<a href="#!/blue">蓝色</a>
<a href="#!/yellow">黄色</a>
<a href="#!/black">黑色</a>
<a href="#!/orange">橙色</a>
<div id='main'></div>
<script src="//apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="main.js"></script>
</body>
</html>
